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The Influence of Strategic Patenting on Companies' Patent Portfolios

  • Blind, Knut
  • Cremers, Katrin
  • Mueller, Elisabeth

This paper analyses whether strategic motives for patenting influence the characteristics of companies' patent portfolios. We use the number of citations and oppositions to represent these characteristics. The investigation is based on survey and patent data from German companies. We find clear evidence that the companies' patenting strategies explain the characteristics of their patent portfolios. First, companies using patents to protect their technological knowledge base receive a higher number of citations for their patents. Second, the motive of offensive – but not of defensive – blocking is related to a higher incidence of oppositions, whereas companies using patents as bartering chips in collaborations receive fewer oppositions to their patents.

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File URL: http://econstor.eu/bitstream/10419/24565/1/dp07013.pdf
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Paper provided by ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research in its series ZEW Discussion Papers with number 07-013.

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Date of creation: 2007
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Handle: RePEc:zbw:zewdip:5501
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  1. Shapiro, Carl, 2001. "Antitrust Limits to Patent Settlements," Competition Policy Center, Working Paper Series qt87s5j911, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
  2. Varian,Hal R. & Farrell,Joseph & Shapiro,Carl, 2004. "The Economics of Information Technology," Cambridge Books, Cambridge University Press, number 9780521844154.
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  6. Eleftherios Sapsalis & Bruno van Pottelsberghe de la Potterie, 2007. "The Institutional Sources Of Knowledge And The Value Of Academic Patents," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 139-157.
  7. Carine Peeters & Bruno Van Pottelsberghe, 2006. "Innovation strategy and the patenting behavior of firms," ULB Institutional Repository 2013/167553, ULB -- Universite Libre de Bruxelles.
  8. Noel, Michael D. & Schankerman, Mark, 2006. "Strategic Patenting and Software Innovation," CEPR Discussion Papers 5701, C.E.P.R. Discussion Papers.
  9. Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August.
  10. Bronwyn H. Hall & Grid Thoma & Salvatore Torrisi, 2007. "The market value of patents and R&D: Evidence from European firms," NBER Working Papers 13426, National Bureau of Economic Research, Inc.
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  12. Wesley M Cohen & Richard R Nelson & John P Walsh, 2003. "Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (Or Not)," Levine's Working Paper Archive 618897000000000624, David K. Levine.
  13. Blind, Knut & Edler, Jakob & Frietsch, Rainer & Schmoch, Ulrich, 2006. "Motives to patent: Empirical evidence from Germany," Research Policy, Elsevier, vol. 35(5), pages 655-672, June.
  14. Hussinger, Katrin, 2005. "Is Silence Golden? Patents versus Secrecy at the Firm Level," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 37, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  15. Jean O. Lanjouw & Mark Schankerman, 2004. "Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators," Economic Journal, Royal Economic Society, vol. 114(495), pages 441-465, 04.
  16. Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
  17. Michael Noel & Mark Schankerman, 2006. "Strategic Patenting and Software Innovation," CEP Discussion Papers dp0740, Centre for Economic Performance, LSE.
  18. Bronwyn H. Hall & Adam Jaffe & Manuel Trajtenberg, 2005. "Market Value and Patent Citations," RAND Journal of Economics, The RAND Corporation, vol. 36(1), pages 16-38, Spring.
  19. Graham, Stuart J. H. & Hall, Bronwyn H. & Harhoff, Dietmar & Mowery, David C., 2002. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-examinations and European Patent Oppositions," Department of Economics, Working Paper Series qt8bs830w9, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  20. Arundel, Anthony, 2001. "The relative effectiveness of patents and secrecy for appropriation," Research Policy, Elsevier, vol. 30(4), pages 611-624, April.
  21. Harhoff, Dietmar & Scherer, Frederic M. & Vopel, Katrin, 2003. "Citations, family size, opposition and the value of patent rights," Research Policy, Elsevier, vol. 32(8), pages 1343-1363, September.
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